Jiahui Qian

Prof. Dr. Jiahui Qian

School of Earth Sciences and Engineering, Sun Yat-Sen University, Guangzhou 510275, China

Research Focus & Metrics

Academic Career Length

14Years (2013-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
1 July 2014 in Geoscience Frontiers
Verified
Journal Article
Open access
CWChunjing Wei
Chunjing Wei
Jiahui QianJiahui Qian
Jiahui Qian
XZXiwen Zhou
Xiwen Zhou
An arguable point regarding the Neoarchean and Paleoproterozoic crustal evolution of the North China Craton (NCC) is whether the tectonic setting in the central belt during the mid-Paleoproterozoic (2.35–2.0 Ga) was dominated by an extensional regime or an oceanic subduction–arc regime. A review of the mid-Paleoproterozoic magmatism and sedimentation for the Hengshan–Wutai–Fuping region suggests that a back-arc extension regime was dominant in this region. This conclusion is consistent with the observation that the 2.35–2.0 Ga magmatism shows a typical bimodal distribution where the mafic rocks mostly have arc affinities and the acidic rocks mainly comprise highly-fractioned calc-alkaline to alkaline (or A-type) granites, and that this magmatism was coeval with development of extensional basins characteristic of transgressive sequences with volcanic interlayers such as in the Hutuo Group. Although the final amalgamation of the NCC was believed to occur at ∼1.85 Ga, recent zircon U–Pb age dating for mica schist in the Wutai Group suggests a collisional event may have occurred at ∼1.95 Ga. The metamorphic ages of ∼1.85 Ga, obtained mostly from the high-grade rocks using the zircon U–Pb approach, most probably indicate uplifting and cooling of these high-grade terranes. This is because (i) phase modeling suggests that newly-grown zircon grains in high-grade rocks with a melt phase cannot date the age of peak pressure and temperature stages, but the age of melt crystallization in cooling stages; (ii) the metamorphic P–T paths with isobaric cooling under 6–7 kb for the Hengshan and Fuping granulites suggest their prolonged stay in the middle–lower crust; and (iii) the obtained metamorphic age data show a continuous distribution from 1.95 to 1.80 Ga. Thus, an alternative tectonic scenario for the Hengshan–Wutai–Fuping region involves: (i) formation of a proto-NCC at ∼2.5 Ga; (ii) back-arc extension during 2.35–2.0 Ga resulting in bimodal magmatism and sedimentation in rifting basins on an Archean basement; (iii) a crustal thickening event in the extended region resulting in a kyanite-type metamorphism at ∼1.95 Ga, and (iv) uplifting and cooling of the thickened crust from 1.93 to 1.80 Ga

1 August 2013 in Precambrian Research
Verified
Journal Article
Closed access
Jiahui QianJiahui Qian
Jiahui Qian
CWChunjing Wei
Chunjing Wei
XZXiwen Zhou
Xiwen Zhou
YZYinghui Zhang
Yinghui Zhang



1 December 2015 in Precambrian Research
Verified
Journal Article
Closed access
ZDZhanzhan Duan
Zhanzhan Duan
CWChunjing Wei
Chunjing Wei
Jiahui QianJiahui Qian
Jiahui Qian

1 November 2018 in Lithos
Verified
Journal Article
Closed access
LWLuo-Juan Wang
Luo-Juan Wang
JGJing-Hui Guo
Jing-Hui Guo
CYChangqing Yin
Changqing Yin
PPPeng Peng
Peng Peng
JZJian Zhang
Jian Zhang
Jiahui QianJiahui Qian
Jiahui Qian